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| Determination of Phosphorus in Copper/Nickel/Cobalt Metal by Triple Tandem Quadrupole-Inductively Coupled Plasma Mass Spectrometry |
| Received:November 27, 2024 Revised:December 25, 2024 |
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| DOI：10. 20236/j. CJIAC. 2025. 03. 012 |
| KeyWord:Triple Tandem Quadrupole Inductively Coupled Plasma Mass Spectrometry; Metal Copper/Nickel/Cobalt; DRC; O2 |
| Author | Institution |
| sunmenghe |
北矿检测技术股份有限公司 |
| LIU Chunfeng |
北矿检测技术股份有限公司 |
| FANG Di |
北矿检测技术股份有限公司 |
| SU Chunfeng |
北矿检测技术股份有限公司 |
| DONG Mengjun |
北矿检测技术股份有限公司 |
| CHEN Diangeng |
北矿检测技术股份有限公司 |
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| Abstract: |
| A triple tandems quadrupole inductively coupled plasma mass spectrometer equipped with a dynamic reaction cell (DRC) has been successfully applied to accurately determine phosphorus in copper/nickel/cobalt metal samples. This method utilizes the reaction between 31P+and O2 in the pool to quantify phosphorus by detecting the oxide ion 31P16O+of 31P+at m/z 47, eliminating the interference of multiple atomic ions and further optimizing the working conditions of the DRC system. The optimal signal-to-noise ratio of 31P16O+ is obtained under the condition of O2 flow rate of 0.9 mL/min. The standard addition method was used to overcome the matrix effect caused by the metal copper/nickel/cobalt matrix, and the experimental results were basically consistent with the results obtained by the national standard method spectrophotometry. The linear range of the method is 0.0001%~0.0050%, and the linear correlation coefficients are all above 0.9995. The detection limit of phosphorus in copper/nickel/cobalt metals is below 0.3ng/mL. The relative standard deviation of the actual sample measurement results is between 4.14% and 13.84%, and the recovery rate is between 94.9% and 118.5%. |
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